Marius dreyfus



a 9 m B! 8 .n u l. 8 t n B. I. a BI S H F Y E R D M nm 9 2 6 U N LAMP.

(Application filed Dec. 7,- 1898.)

(No Model.)

INIVENTOH WITNESSES: J 74 THE Norms PETERS ca. momumo" WASHWGTON, u. c

lhvrrn MARIUS DREYFUS, OF PARIS, FRANCE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 626,990, dated June 13, 1899. Application filed December 7, 1898. fierial No. 698,545. (No model.)

.To all whom it may concern:

Be it known that I, MARIUS DREYFUS, of Paris, France, have invented a new and Improved Lamp, of which the following is a full, clear, and exact description.

This invention relates to improvements in acetyle11e-gas lamps; and the object is to provide a lamp of this character that shall be simple and strong in construction and having no small tubes or valves to become obstructed or clogged, and, further, to so construct the parts that the water supplied is automatically regulated by the slow and gradual decomposition of the carbid.

I will describe a lamp embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawing, forming a part of this specification, in which the figure is a vertical section of a lamp embodying my invention.

WVhile the drawing shows the lamp arranged as a bicycle or vehicle lamp, it is to be understood that it may be modified for household or other purposes.

Referring to the drawing, 1 designates the body of thelamp, which provides a fount for containing the water. Removably connected to the upper end of the body or fount is a cover 2, from which a tube 3 extends down and into the body of the lamp. This tube 3 is adapted to slide its lower end into a jacket 4, and the joint between the tube-section 3 and the jacket at is covered by a rubber or similar ring 5 to prevent the entrance of water. At the lowerend of the jacket 4 is a diaphragm 6, below which is a chamber '7 for receiving water from the fount, the said water entering through ports 8.

Extended upward in the jacket 4 is a perforated wick-carrying tube 9. This wick-carrying tube at its lower end has a screw-thread engagement with an interior threaded opening in a boss 10, formed on the diaphragm 6, and arranged within this tube 9 is a wick 11 for carrying water by capillary attraction. The lower end of the tube 9 is designed to be controlled as to the entrance of water by means of a valve, here shown as a plug-valve 12, having an exterior screw-thread engaging with an interior screw-thread formed at the lower end of the jacket 4, and on this valve shoulders 14, formed on the bottom of the body portion 1.. To make a tight joint when the valve is closed, a packing 12, of rubber or similar material, is placed on the upper end of the valve to engage against the boss 10, which forms the va1veseat.

Removably arranged in the jacket 4 and also extended nearlyto the top of the tube 3 is a carbid-holder, here shown as made in three sections 15, 16, and 17, the three sections practically making a single tube or container. The object in making it in sections is for convenience in removing and cleaning the parts when made of metal. It is'to be understood, however,that this container :may be made of cardboard or similar material, that may be charged with carbid, and when the carbid shall have been destroyed or used up the container may be thrown away, thus obviatingthenecessityof cleaning. Extended upward in the container and surrounding-the tube 9 is a perforated tube 18, which is slightly spaced from the tube 9 and is designed to prevent the carbid from entering through the openings in the tube 9, and it is also designed as a convenient means for lifting the container from the jacket, as will be hereinafter described. This tube 18 passes through a hole in the bottom of the container, and at its lower end it has a flange 18, which engages between the bottom of the container and the diaphragm 6, and thus the tube is held in place.

Extended through the top of the cover 2 is a gas-discharge pipe 19, having a burner-tip 20, 011 which a reflector 21, of any suitable material, may be placed. As here shown, the tube 19 has a portion extended upward, and then it is turned at right angles to the body of the lamp, and through this right-angled 'portion is an opening 22 and a sleeve 22,

through which a securing-rod 23 is designed to pass. The lower end of this rod 23 is screw-threaded and adapted to engage in a screw-threadedsocket 24, formed in the la.mpbody, and the upper end is provided with a hook 25. This rod 23 not only serves to hold the cover 2 and jacket 4 from rotating relatively to the lamp-body, but by means of its hook end the carbid-holder may be lifted from the jacket, as the saidhook end is designed to engage in an opening 26, formed near the upper end of the tube 18.

In operation a supply of water is to be placed in the body or fount of the lamp, and then the jacket containing the carbid-holder, with the carbid therein, is to be placed in position, as indicated in the drawing. WVhen in position, the lug 13 will engage between the shoulders 14. When it is desired to generate gas for lighting purposes, the rod 23 is to be removed, and then the cover, the jacket, and the carbid-holder are to be rotated relatively to the body portion of the lamp in such a direction as to unseat the valve 12 from its engagement with the boss 10. Then the water in the chamber 7 will be absorbed by the rod 23 is to be placed to lock the parts, as indicated. WVhen it is desired to extinguish the light, the rod 23 is to be again removed and the parts rotated in the opposite direction to that above mentioned, so that the valve will shut off the entrance of water to the Wicking 11.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. An acetylene-gas lamp, comprising a body portion forming a water-fount, a cover for the body portion, a jacket carried by said cover and extended into the body portion, a valve in the lower portion of said jacket adapted to be opened or closed by a rotary movement of the jacket relatively to the body portion, a carbid-holder removably placed in the jacket, a perforated tube extended upward in said carbid-holder, a perforated tube attached to the jacket and extended upward in said first-named perforated tube, and a burner-tip extended through the cover, substantially as specified.

2. An acetylene-gas lamp, comprising ,a body portion which forms a Water-fount, a cover for said body portion, a jacket carried by said cover and extended into the body portion, the said jacket having a diaphragm near its lower end andawater-chamber below said diaphragm, a perforated tube extended from said diaphragm upward in the jacket and adapted to receive a wicking or similar material, a valve for controlling the entrance of water from the chamber to said wicking or similar material, the said valve being opertended through said diaphragm and upward in the jacket, the said tubebeing perforated and adapted to receive a wicking, a valve having a screw-thread en gagementin the bottom wall of the jacket and adapted to control the supply of water to the wicking, a lug extended downward from said valve and adapted for engagement between shoulders formed in the bottom of the lamp-body, a carbidcontainer removably placed in the jacket, a

perforated tube in said container and surrounding the first-named tube, a gas-discharge tube extended through the cover, and means having connection with said gas-discharge tube, for locking the same in position, substantially as specified.

4. An acetylene-gas lamp, comprising a body portion forming a fount for water, a cover therefor, a jacket carried by said cover and extended into the body portion, a diaphragm near the lower end of such jacket, a perforated tube extended through said diaphragm and upward in thejacket a valve operated by rotary motion of the jacket for controlling the entrance of water to said tube, a

carbid-container consisting of separable sec- "and extended into the body portion, a perforated tube extended upward in such jacket and adapted to receive a wicking or similar material, a valve for controlling the supply of water to said tube, a carbid-container removably arranged in the jacket and surrounding the perforated tube, and a gas-discharge tube, substantially as specified.

MARIUS DREYFUS.

' YVitnesses:

J ULES ARMENGAUD, Jeune, EDWARD P. MACLEAN. 

